Vertex Standard VXD series Installation Manual page 36

Chapter 4 Options and Accessories Installation
Pin No. Pin Name
1 USB+
USB –
2
3 VBUS
USB/MAP _ ID GND
4
MAP _ ID _ 2
5
MAP _ ID _ 1
6
7 SW B+
8 PWRGND
SPKR –
9
10 SPKR+
11 Tx Audio
12 Audio GND
13 AUX Audio 1
1 Pulling this line to ground will activate PTT function, activating the AUX_MIC input.
2 Fixed level (independent of volume level) received audio signal, including alert tones. Flat or de-emphasis are programmed by pro-
gramming software. Output voltage is approximately 330 mVrms per 1kHz of deviation.
3 This input is used to detect when a rear microphone accessory is taken off-hook, to override PL to alert the user to busy traffic
prior to transmitting.
4 This microphone signal is independent of the microphone signal on the front microphone connector. The nominal input level is
80mVrms for 60% deviation. The DC impedance is 660 ohms and the AC impedance is 560 ohms.
5 See Figure 3-2 and Figure 3-8 for wiring information.
Figure 4-2 Pin Configuration of Rear Accessory Connector (as viewed from the rear of the radio)
Page 34
Table 4-1 Rear Accessory Connector Pin Functions
Pin Function
USB+ ( Data )
USB – ( Data )
USB Power
( 5V from USB accessory/cable )
USB/MAP _ ID Ground
Accessory Identifier
Accessory Identifier
Switched Battery Voltage
Ground
Speaker –
( 3.2 ohm minimum impedance )
Speaker +
( 3.2 ohm minimum impedance )
Rear External Microphone Input
Audio Ground
PUBLIC Address 1
Pin No. Pin Name
14 Rx Audio
15 AUX Audio 2
16 GND
GP5-1 ( PTT )
17
18 GND
GP5-2 ( Monitor )
19
20 GP5-6
21 GP5-3
22 GP5-7
23 EMERGENCY
4
24 GP5-8
25 IGN SENSE
26 VIP-1
Pin Function
2
Receive Live Audio
PUBLIC Address 2
Ground
1
5V Level GPIO, PTT Input
Ground
3
5V Level GPIO, Monitor Input
5V Level GPIO
5V Level GPIO,
Channel Activity Function
5V Level GPIO
Emergency Switch Input
5V Level GPIO
5
Ignition Sense
12V Tolerant, 5V GPIO,
External Alarm